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STIHL TS 400
5
DG screws are screwed into plastic and light metal parts. These screws cut a thread in the material when they are screwed
in for the first time. The material is permanently deformed. The screws can then be removed at will and retightened without
impairing the strength of the screw connection, provided that the specified tightening torque is maintained. It is therefore
essential to use a torque wrench.
2.6 Tightening torques
Size of
thread
IS-DG 4x14
IS-DG 4x15
IS-DG 4x15
IS-DG 5x20
IS-DG 5x20
M5
IS-M 5x16
IS-M 5x16
IS-M 5x16
IS-M 5x16
IS-M 5x16
IS-M 5x20
IS-M 5x20
IS-M 5x20
IS-M 5x20
IS-M 5x20
IS-M 5x20
IS-M 5x20
IS-M 5x20
IS-M 5x20
IS-M 5x25
IS-M 6x16
IS-M 6x16
IS-M 6x16
M 5x55
M 8x1
M 8x1
M 12x1 L
M 14x1.25
M 10x.. L
Connecting
element
Groove-headed screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Nut
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Socket-head screw
Grub screw
Nut
Nut
Driver
Nut
For component
Tightening torque
(Nm)
Starter cover
1.8
Handle moulding / handle
1.8
Retainer, stop rods
1.8
Handle / handle mount
8.0
Tank housing left / right
7.5
Filter base / carburetor
3.5
Cover, clamp / cast arm
4.5
Handle / tank housing
8.0
Air guide cover / crankcase
4.5
Muffler / crankcase
10.0
Muffler / cylinder
10.0
Cast arm / crankcase
10.0
Filter base / crankcase
6.0
Filter housing / filter base
4.0
Shroud / tank housing
6.0
Crankcase left / right
10.0
Fan cover / tank housing
6.0
Starter cover / cast arm
6.0
Cylinder / crankcase
10.0
Ignition module / crankcase
8.0
Support / handle / tank housing
8.0
AV element, cast arm / handle
6.0
AV element, tank housing / cast arm
6.0
AV element, tank housing / crankcase, left
6.0
Tank housing / carburetor
4.0
Flywheel
30.0
Starter wheel
23.0
Clutch
40.0
Spark plug
27.5
V-belt pulley / bearing
37.5
Decompression valve
14.0
Remark
1)
2)
When screwing the DG screws into an existing screw thread:
-
Insert the DG screw in the hole and turn counterclockwise until it gently drops into the hole in axial direction.
-
Turn the screw clockwise and tighten with the specified torque.
This procedure guarantees that the screw engages in the existing screw thread without cutting a new thread and thus
prevents the strength of the screw connection being weakened.
1) Secure screw with adhesive 0786 111 1109 (Loctite 270).
2) A washer must be fitted under the head of the screw.
Note:
Screws secured with adhesive must be heated with a hot-air fan (drier) in order to release them.
Great care must be exercised with plastic parts!